The U.S. Gulf Coast—home to the world's largest concentration of petroleum refineries—is suddenly awash in crude oil. So much high-quality oil is flowing into the area that the price there has dropped sharply.
Banks have banned cellphones, barred electronic chat rooms and forced traders to go on vacation. But in the battle to avoid trading scandals, a new weapon is coming to the fore: algorithms that detect potentially troublesome patterns in traders' communications.
A week and a half after China suddenly asserted authority over a busy patch of airspace in the East China Sea, concerns are rising that Asia's territorial disputes could end up weighing on commercial air travel.
The Securities and Exchange Commission asked struggling retailer JC Penney to provide information on a controversial September stock offering that sent its shares plummeting when the sale was disclosed.